One of the Warmer's arguments that has always amazed me... (coming from 'the smartest people in the world') is this thinking that global warming is causing ice to melt at the polar caps, and the excess water will threaten our coastlines, etc. These images of entire coastal cities under water, due to melting icecaps.... oh, it's so unbearable to even think about, isn't it?
Well guess what, geniuses? IF the polar icecaps were to ever melt significantly enough to engulf a substantial area of coastline, the cooling effects on the ocean convection would cause it to stop functioning as it always has, and everything in the ocean would soon die. Before any coastal city was threatened, the ocean would be a lifeless stagnant pond of water, and we would have MUCH bigger problems than flooded coastal property. The 'scenarios' you've dreamed up, simply can't happen, and won't happen, and IF they DID happen, would cause a great deal more calamity than you have imagined.
The Earth is an amazingly resilient and self-cleaning planet. Decades and centuries of pollution, over-exploiting resources, and man-made catastrophe, are cleaned up and erased in a matter of months by good old Mother Nature. We could completely eliminate the internal combustion engine, and all drive 'green' cars, and do this for a century, and the total cumulative results of this, would be erased with a single volcanic eruption. When Mount St. Helens erupted in 1980, the amount of debris and ash dispersed into the atmosphere from that ONE eruption, was more harmful and destructive to the planet than all automobiles and factories ever operated in the history of mankind. It's like giving a homeless person a pack of sunflower seeds and believing you've done something to end world hunger!